Railway-track structure.



s w m H m E M M? ME a awn Q.

m 2k. m Q k 5 k Q r k 3 MQQQ \BQw Q Q m Q m Q R b w momocum m F. F. STOCKWBLL, JR. & H. R. LUTHER. RAILWAY TRACK STRUCTURE.

APPLICATION FILED NOV. 11,1903.

I/V/TNESSES a?! UNITED STATES PATENT OFFICE.

FREDERIO F. STOCKVVELL, J R., OF SOMERVILLE, AND HENRY R. LUTHER, OF NEWTON CENTER, MASSACHUSETTS.

RAILWAY-TRACK STRUCTURE.

Specification of Letters Patent. 7

Patented Aug. 1, 1905.

To all whom it may concern.-

Be it known that we, FREDERIo F. SrocK- WELL, Jr., of Somerville, and HENRY R. LU- THER, of Newton Center, county of Middlesex, and State of Massachusetts, have invented certain new and useful Improvements in Railway-Track Structures, of which the following is a specification.

Ourinvention relates to that class of railway structures known as frogs, switches, crossings, and similar structures in which the rails comprising the tracks meet, converge, or cross. Heretofore more or less difficulty has been encountered in providing a structure of this kind to which the rail. ends can be easily attached and which'will withstand the repeated and severe shocks to which it is constantly subjected; and the object of our invention is to secure a structure in which the short lengths of rails usually included in frogs, switches, and the like are so connected and united with the central body of the structure as to remain integral therewith in spite of repeated and severe shocks.

In structures of this kind made heretofore the uniting or body portion of the structure has been made of cast-iron, which is in its nature brittle and ill adapted to withstand the sudden shocks and jars of heavy trafiic. Our object has been to overcome this difficulty by providing the body part, or part which supports the point and riser, of a material that is tough and non-breakable, and thereby adapted to withstand any shock or jar that the structure is liable to be subjected to.

In the drawings accompanying this specification, Figure 1 is a plan View of a frog embodying our invention. "Fig. 2 is a sectional view of said frog on line 2 2 in Fig. 1. Fig. 3 is a sectional view on line 8 3 in Fig. 1. Fig. Iis a sectional view on line I 4: in Fig. 1. Fig. 5 is a plan view of a switch-mate constructed in accordance with our invention. Fig. 6 is a plan view of a switch embodying our invention. Fig. 7 is a sectional view of said mate on line 7 7 in Fig. 5. Fig. 8 is a sectional view on line 8 8 in Fig. 5. Fig. 9 is a sectional view on line 9 9 in Fig. 5. Fig. 10 is a sectional view on line 10 10 in Fig. 5.

,Fig. 11 is a sectional view of said switch on throughout the several views in the drawings.

- A represents the central body of the frog. switch, mate, or other like structure composed of a malleable material, such as mild steel, having the hardened bearing-surfaces B B welded thereto.

C O O G are the short lengths of rail usually connected to or embedded in the central body.

A. The inner ends of these rails are provided with the holes D D in the web, and the ends of the crossing are likewise provided with similar openings E E in the web, the .ends of said crossing structure being adapted to abut.

against the rail ends in the usual manner.

F Fare bodies of cast-iron or other metal filling the holes D D and E E, inclosing the webs ing them firmly together.

The process of manufacturing our improved railway-track structure is as follows: The central portion of the crossing structure and the short lengths of rail are laid in proper alinement in a mold and molten metal is then poured around the joints, flowing through the openings in the Webs of both the central portion and the rail ends and inclosing all those por tions of both parts above the base and below the bearing-surfaces in a mass of metal. In the case of the frog the two short rails at each end are included in one mess, the space between the two r-ails being occupied by the one body of cast metal. In any crossing structure where the two short rails at either end are approximately near to each other we have found it advisable to include the two in one body of cast metal. The metal in cooling contracts, and this draws the rail ends closely to the central portion and binds them therewith, making an integral structure.

Having described our invention, what we claim is 1. The processof constructingrailway-track structures, consisting of forminga mold of the desired shape of a body part andv track-surfaces; of pouring a hard malleable material into said mold to form the surface of the tracksurfaces; of pouring a soft malleable material into said mold to form the body part of said structure, said last named material being poured into the mold before the hard malleable material is fully cooled, so as to weld the two materials together; of forming a mold in which the body part and track-surfaces are inserted after they have become cool, and in which short sections of rails are inserted to abut the track-surfaces of the body part; and of thereafter pouring cast-iron into the mold to surround the ends of the body part and the inner ends of the rail ends to unite the whole together into an integral structure.

2. The combination in a railway-track structure, of cast track-surfaces composed of ahard malleable wearing material; a cast malleable body part cast upon and Welded to said tracksurfaces; projections formed on said malleable body part; rail ends attached to the projections on said body part; and a cast-metal body part cast around said projections and rail ends, the Whole being formed into an integral structure.

In witness whereof we have hereunto set our hands, in the presence of two subscribing witnesses, this the 26th day of October, A. D. 1903.

FREDERIC F. STOCKWELL, JR. HENRY R. LUTHER.

Witnesses:

R. P. ELLIOTT, H. M. KELso. 

